Optical fingerprinting of plastics compositions

Details Optical fingerprinting of plastics compositions Optical fingerprinting of plastics compositions

G - Physics

01

N

G01N 21/65 (2006.01) C08K 5/00 (2006.01) C09B 67/22 (2006.01)

Patent

CA 2243873

A plastics material which contains a pigment composition comprising a pigment having adsorbed on its surface, or as a physical mixture, up to 10% by weight, based on the total weight of pigment composition of a coding compound which is a compound containing azo, azomethine or polycyclic chromophore and which has an absorptionspectrum and a Raman spectrum different from that of the pigment.

Matière plastique renfermant une composition de pigment, à base d'un pigment avec, adsorbé à sa surface, ou sous forme de mélange physique, jusqu'à 10 % en poids, pourcentage basé sur le poids total de la composition pigmentaire, d'un composé de codage, qui est un composé à base d'un azoïque, d'azométhine ou d'un chromophore polycyclique, et qui présente un spectre d'absorption et un spectre Raman différents de celui du pigment.

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